Page 92 - The Wellington photographic handbook

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and portraits against dark backgrounds yield rich mellow results
which would be difficult to obtain in any other way.
Those who admire the effect of Collodio-Chloride paper toned
in gold and platinum will find in WELLINGTON B.B. an
admirable substitute, giving results similar in colour and general
effect and rendering toning wholly unnecessary.
EXPOSURE.
The advice previously given in regard to exposing bromide
paper applies with equal force to B.B. With an average negative
an exposure of from 10 to 12 seconds will be found approximately
correct at 12 inches from a 16-c.p. lamp. It should be remembered
that B.B. paper possesses quite exceptional latitude, and while
this is a valuable property as a means of preventing waste, the
photographer should not allow it to entice him into slipshod methods
of working. As with any other paper, the best results will be
secured by correct exposure and normal development.
DEVELOPMENT.
B.B. Paper being slower than bromide a stronger light is
permissible in the dark-room during development. The reader is
recommended to take full advantage of this, as it will render his
work more pleasant and his results more certain. One thickness
of yellow glass or fabric will be found sufficient to make any ordinary
light perfectly safe.
Various developers may be used for the development of
B.B. Paper, but the following are recommended :
METOL-HYDROKINONE DEVELOPER.*
Metol ... ... ... ... 20 grains 1-2 grammes
Hydrokinone ... ... ... 90 ,, 6 ,,
Sodium Sulphite (crystals) ... 700 „ 45 ,,
Sodium Carbonate (cryst.) ...1000 ,, 65 ,,
Potassium Bromide ... ... 20 ,, 1-2 „
Water to ... ... ... 80 ounces 2 litres.
The above ingredients should be dissolved in the order given and kept
in bottles filled to the stopper.
For warmer brown-black tones the potassium bromide may
be increased to forty grains.
* Before making up any formula, read the notes on pages 125, 126 and 134.
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